So I have a new m70 Winchester I’m hoping to work up a load using the 80gr Barnes ttsx. I have always liked imr-4350 and imr-4064 in the 308 based cases but I can’t find any data using these two powders. Barnes website recommends several powders but I don’t have any of them on hand. Any advice or guidance would be greatly appreciated. Bullets and brass will be here any day

I found an extremely effective load using Ramshot Hunter in my 243 with the 80 gr TTSX. Bullet is zipping along at 3415 fps with excellent on-game performance.

Good luck!

I never could get that bullet to shoot well in my rifle with 4350 or 4064. CFE 223 was the best I found. If you want to try that I’ll share some load info.

I have had excellent results using varget powder with my 243. Very accurate.

I too am looking for a .243 win load with the 80 grain ttsx. I don't have Superformance or any of the powders the Barnes #4 manual shows. Does anyone have load data for Varget, IMR 4350, Accurate 4350 or Magpro. I also have 4831.

I load a Barnes 80gr. TTSX bullet in my 243win.
Very good accuracy and has killed a mule deer doe on a damage control hunt at 210yds.
1. Remington cases
2. Federal 210GM primer
3. 41.0grs. of Alliant RL17 powder
4. Barnes 80gr. TTSX bullet seated 2.620" COAL
5. Heavy crimp with Lee Factory Crimp Die.

Produces 1/4" 3-shot group at 100yds in my Remington 700 BDL 24" rifle.

Barnes provides imr-4350 data to be 42-46gr

I picked up a pound of Superformance and will try that. My Barnes #4 manual shows it as the fastest and most accurate with the 80 grain ttsx.